Abstract: The present invention relates to a hinge connection comprising a male member applied on a base plate, and having protrusions provided to be hinged and resiliently fitted between a pair of female members applied on a further base plate. The male member of the hinge connection is being formed by two parallel male legs, wherein each leg comprises protrusions comprising cogs or cut teeth. The female member is formed by two parallel female legs and each of the female members comprises a through hole for engaging said protrusions of the male legs. The present invention further provides construction elements comprising the hinge connection members of the instant application. In a particular embodiment such construction elements are stackable, and allow the construction of complex three-dimensional structures without loss of flexibility.

Abstract: Sprinkler nozzle which is formed of two parts which each mesh into each other with one of their far ends and which are mutually connected by means of a snap system which makes it possible to lock both parts in different positions in relation to each other, whereby the first part (2) consists of a hollow body with a passage (5) which is or can be fixed to a spray cylinder (1), and whereby the second part (4) consists of a hollow body in which is provided a die channel (6), characterised in that the above-mentioned snap system is formed of two contact surfaces working in conjunction with each other, one of which is part of the first part (2) and consists of a multi-surfaced edge (9, 10, 11), and the other contact surface of which is part of the second part (4) and consists of a multi-surfaced ring (13, 14, 15) which is complementary to the above-mentioned multi-surfaced edge (9, 10, 11).